@angular/core
Version:
Angular - the core framework
84 lines • 11 kB
JavaScript
/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import { ChangeDetectorRef } from '../../change_detection/change_detector_ref';
import { getCompilerFacade, R3ResolvedDependencyType } from '../../compiler/compiler_facade';
import { ReflectionCapabilities } from '../../reflection/reflection_capabilities';
import { Attribute, Host, Inject, Optional, Self, SkipSelf } from '../metadata';
let _reflect = null;
export function getReflect() {
return (_reflect = _reflect || new ReflectionCapabilities());
}
export function reflectDependencies(type) {
return convertDependencies(getReflect().parameters(type));
}
export function convertDependencies(deps) {
const compiler = getCompilerFacade();
return deps.map(dep => reflectDependency(compiler, dep));
}
function reflectDependency(compiler, dep) {
const meta = {
token: null,
host: false,
optional: false,
resolved: compiler.R3ResolvedDependencyType.Token,
self: false,
skipSelf: false,
};
function setTokenAndResolvedType(token) {
meta.resolved = compiler.R3ResolvedDependencyType.Token;
meta.token = token;
}
if (Array.isArray(dep) && dep.length > 0) {
for (let j = 0; j < dep.length; j++) {
const param = dep[j];
if (param === undefined) {
// param may be undefined if type of dep is not set by ngtsc
continue;
}
const proto = Object.getPrototypeOf(param);
if (param instanceof Optional || proto.ngMetadataName === 'Optional') {
meta.optional = true;
}
else if (param instanceof SkipSelf || proto.ngMetadataName === 'SkipSelf') {
meta.skipSelf = true;
}
else if (param instanceof Self || proto.ngMetadataName === 'Self') {
meta.self = true;
}
else if (param instanceof Host || proto.ngMetadataName === 'Host') {
meta.host = true;
}
else if (param instanceof Inject) {
meta.token = param.token;
}
else if (param instanceof Attribute) {
if (param.attributeName === undefined) {
throw new Error(`Attribute name must be defined.`);
}
meta.token = param.attributeName;
meta.resolved = compiler.R3ResolvedDependencyType.Attribute;
}
else if (param === ChangeDetectorRef) {
meta.token = param;
meta.resolved = compiler.R3ResolvedDependencyType.ChangeDetectorRef;
}
else {
setTokenAndResolvedType(param);
}
}
}
else if (dep === undefined || (Array.isArray(dep) && dep.length === 0)) {
meta.token = undefined;
meta.resolved = R3ResolvedDependencyType.Invalid;
}
else {
setTokenAndResolvedType(dep);
}
return meta;
}
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